Bearing for loose pulleys



B. W. FIELLMAN.

BEARING FOR LOGSE PULLEYS. APPucATlon HLEu AuG.2u. 19H1.

1,381,178. PatentedJlme 14, 1921.

5 SHEETS-SHEET l.

f-fg/ B. W. FJELLMAN.

BEARING FOR LOOSE PULLEYS.

APPLICATION FILED AUG.28| 1919.

fg. Z

@wa-f B. W. FJELLMAN.

BEARING FOR LOOSE PULLEYS.

APPLICATION FILED AuG.28.1919.

5 SHEETS-SHEET 3.

B. W. FJELLMAN.

BEARING FOR LOGSE PULLEYS.

APPLICATION FILED Aus.2a,19|9.

1,381,178. PabentedJune 14, 1921;

5 SHEETS-SHEET 4 y( 'if w B. W. FIELLMAN.

BEARING FOR LOOSE PULLEYS. APPLlcATaoN FILED M1618. 1919.

1,381,178. Patented June 14, 1921.

M /1 16 3i si; 47

UNITE-D STATES PAIENT orFicE.

- LBENGT muros. FJELLMAN, or GOTTENBORG, SWEDEN, AssIeNoB To AKTIEBOLAGET SVENSKA. KULLAGERFABRIXEN, OF GOTTENBGRG, SWEDEN, A CORPORATION F To atl whom. t may concern: .lf2 fi *Be it known-that I, BnNe'r lVrirroR FJELL- "il MAN, a sub'ect of the King 0f Sweden, re'

siding at (xottenborg, in the Kingdom of Sweden have invented new and useful Im- ',lz i

f provements in Bearings for Loose l ulleys,

'of which the following isa specification.

This'invention relates to means whereby Vlods'e pulleys may be mounted on ball or ""ioller bearings, which comprises an undiided sleeve directly surrounding the ball Lffextending flan e ball or roller ami.-

or roller Vbearings and having, preferabl on its inner cylindrical surface an inwardly affording a support for` the earings in the lateral direcu The object of this invention is to provide 'simple and reliable means for holding the ball or roller bearings in proper position on the said sleeve, and consists, chiefly, in that thebushing sleeve with the ball or roller bearings placed therein 4is surrounded b y two symmetrical or substantially symmetrical sheet metal caps which are locked to the bushing sleeve or to the hub of the loose pulle or to both of said elements by suitable ocking means.

In` the accompanying drawing, Figures 1-5, inclusive, show axial sections of loose 3e pulleys having bushings according to this invention.

In the embodiment shown in'Fig. l, the

bushing comprises a sleeve 1 surrounding the outer track rings of two ball bearings 2 and 3. Formed on the inner cylindrical surface of the sleeve 1 is a central annular iange .6, 'engaging between the outer track rings of the ball bearings 2 and 3 and afording a lateral support for said rings so as 40 to maintain the latter at a fixed distance apart. To secure the ball bearings in the sleeve 1 there are provided around the said sleeve as well as around the shaft 4, two sheet metal caps 16, 17 bearing with flat portions 18, 19, respectively, against the are placed in the proper position with respect to each other, the hub halves 13, 14 are placed around the caps 16, 17, respectively, and are clam ed together by means of screw bolts (not s own) egrtendin therethrough in the usual manner so t at the Specification-of Letters Patent.

BEARING FOR LOOSE PULLEYS.

Patented June 14, 1921.

sheet metal caps will be held in place, in part, by the friction between the ca s and the sleeve 1, and, in part, by the friction between the caps and the hub 13, 14.

The embodiment shown in Fi 2 differs from that shown in Fig. 1, chiel y, in that the bushing sleeve 1 is formed on its outer cylindrical surface with grooves 2O while the sheet metal caps 16, 17 are formed with corresponding depressions 21, said grooves and said depressions forming together a bayonet clutch fpr locking the caps to the sleeve 1 whereby the caps will be maintained in place more safely than by frictio'rial engagement only. Furthermore, those edges 22 of the caps adjacent to the shaft. are bent inwardly to render the entrance of dust and other impurities to the bearings more dilicult. l

The embodiment shown in Fig-3 differs from that shown in Fig. 2 only 1n that the bayonet clutches are substituted by outwardly extending bends 23, 24 of the ends of the caps facing each other whereby the caps 16, 17 will be locked to the hub 13, 14 due to the placing of the latter on the caps.

In the embodiment shown in Fig. 4 the ends of the caps 16, 17 facing each other are formed with inwardl extending bends 23, 24 by means of whic the caps are locked to the ybushing sleeve 1. Attached to the edges olf the caps adjacent to the shaft are angularly shaped sheet meta-1 rings 25, 26 providing together with said edges annular chambers for receiving packings 27, 28.

The embodiment shown in Fig. 5 differs from that shown in Fig. 4 essentially in that the sheet metal rings 25, 26 are substituted by cup-shaped sheet metal members 29, 30 bearing against the ends of the sleeve 1 and ofthe ball bearings 2, 3 with outer flatshaped portions and in turn tightly emcluding bearings wherein the rolling elements are balls or other rolling devices.

Having thus describedvmy invention, I cla-irml. A bebring construction for loose pulleys, comprising roller bearings, a sleeve adapted to surround said bearings,'and two housinP caps each surrounding one end of the sai sleeve and in turn adapted to be surrounded by the loose pulley. l

2. A bearing construction `folr loose pulleys, comprising roller bearings, an undivided sleeve adapted to directly surround Ysaid bearings, two housing caps, each Burrounding one end of the said, sleeve and in 'turn adapted to be surroundd'by the hub of the loose pulley, and means'for maintaining the said caps in place between said' hub and said sleeve.

3. A bearing construction for loose puls,

leys, comprisin roller bearings, an undivided sleeve, a apted to directly surround the said bearings, and two sheet metal caps each surrounding one end of the said sleeve, with auxiliary means for maintaining' the said caps in place on the said sleeve.

4. A bearing construction for loose pulleys, comprising roller bearings, an undivided' sleeve, adapted tos directlyvsurround the said bearings, and two caps, each sursu pulley, each cap leys, comprising roller bearin call engaging saidV sleeve.

6. A bearing construction for loos leys,v comprising roller bearings, vided sleeve surrounding said bearings, two' sheet metal caps each surrounding one end of said Sleeve and also surrounding the said an undishaft, annular sheet metal bodies placed,

within said caps and also surroundin shaft to form annular chambers aroun shaft between themselvesand the said c and packing material placed in said ch bers and bearing against the shaft. In testimony whereof I have si name.

gned my BENGT WIKTOR FJELLMAN. 

